Improvement in beam-adjusting scaffolds



A. N; WESTGATE.

"Improvement in Beam Adjusting-Scaffolds.

l No.' 131,920. Patented 0ct.1,1872.

. port the beam horizontally.

N UNITED STATES- ATENT FICE.

IMPROVEMENT IN BEAM-ADJUSTING SCAFFOLDS.

Specication forming part of Letters Patent No. 131,920, dated October 1,1872.

To all whom it may concern:

Beit known that I, ABIAL N. WEsTGATE, of Acushnet, in the county ofBristol and State of Massachusetts, have invented certain Improvementsin Beam-Adjusting Machines, of ywhich the following isa specification:

My invention relates to the combination of carriage and horse, for thepurpose of transporting the beam to its position over the wall on whichit is to rest. The jackscrew and standard are for elevating the beamabove the wall of the building, and also for settling it onto the wallwhen in position. The roll on the top of the standard is for adjustingthe beam endwise.` The frame on the standard is to sup- Figure l is aperspective view embodying the devices of my invention. Fig. 2 is a'viewof the standard removed from Fig. 1.

A' A' A' is the frame of the carriage, which should be constructed ofstrong timber, and` `should be about six feet square. B.' B' B' arewheels, which should be constructed of strong material, and should beabout one foot in diameter. C' are thills. D' D' D' is a horse or framesecured to the frame of the carriage with hooks a a'. This horse shouldalso be made of strong timber, and should be well braced.

E is a jack-screw, which rests on the center of the carriage. d' is abar for rotating the screw.

F' is a standard resting in a socket in the end of the screw. H' is aframe secured to the standard. I' is a roll hung in frame H. e is a holethrough the roll for the adjusting-bar, which bar is also used to barone of the rolls i when two beamadjusters are used in the adjusting` ofone beam. The standard F' may &c.

Operation'.

The beam-adjuster herein described, being constructed as hereinspeciied, its operation may be noted. The carriage with horse attachedon it, as herein shown, is placed on the floor of the building inside ofthe walls, the beam to be placed in position is hoisted by means of aderrick standin gon the ground outside of the wall, and placedtransversely across the frame and roll on the top of the standard, whichframe, roll, and standard are supported by the jack-screw. The carriage,with beam supported on the roll and frame a few inches higher than thewall, being drawn to the opposite end of the building, and adj ustedend- Wise to the desired position by the roll in the frame of thestandard, is settled to the wall or to its columns by turning down thejackscrew. When large beams are to be handled two beam-adjusters may beused. Thus, by this device, massive beams may be quickly and accuratelyplaced on the walls of build# ings, as will be observed without furtherspeciiication.

y I make no claim to the devices of the beamadjuster, separatelyconsidered; but I claim- The combination of carriage A', horse D', frameH', and roll l', as herein set forth and described, for the purposespecified.

ABIAL N. WESTGATE.

Witnesses JNO. DAvrs,

M. B. DAVIS.

be made round and may revolve in guides b b', y

